Apparatus And Method For Broadcasting The Detection Of RF Jammer Presence
First Claim
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1. A method for broadcasting an emergency message regarding a theft or an attempted theft of a vehicle, the method comprising:
- detecting a jamming of a radio frequency (RF) transmission;
when the jamming is detected, broadcasting an emergency message on a first random access channel (RACH) associated with the vehicle according to a last known broadcast channel (BCH);
when the jamming is detected, determining at least one last known neighbor serving cell from a stored data structure, and broadcasting the emergency message on one or more second RACHs associated with each of the at least one last known neighbor serving cells.
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Abstract
The jamming of a radio frequency (RF) transmission after the vehicle is parked is detected. When the jamming is detected, an emergency message is broadcast on a first random access channel (RACH) associated with the vehicle according to a last known broadcast channel (BCH). When the jamming is detected, at least one last known neighbor serving cell from a stored data structure is determined, and the emergency message is broadcast on one or more second RACHs associated with each of the at least one last known neighbor serving cells.
25 Citations
20 Claims
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1. A method for broadcasting an emergency message regarding a theft or an attempted theft of a vehicle, the method comprising:
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detecting a jamming of a radio frequency (RF) transmission; when the jamming is detected, broadcasting an emergency message on a first random access channel (RACH) associated with the vehicle according to a last known broadcast channel (BCH); when the jamming is detected, determining at least one last known neighbor serving cell from a stored data structure, and broadcasting the emergency message on one or more second RACHs associated with each of the at least one last known neighbor serving cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for broadcasting an emergency message regarding a theft or an attempted theft of a vehicle, the apparatus comprising:
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an antenna configured to receive a radio frequency (RF) transmission; an interface coupled to the antenna; a memory configured to store a data structure, the data structure indicating at least one last know neighbor serving cell; a controller coupled to the interface and the memory, the controller configured to detect a jamming of the RF transmission received at the antenna after the vehicle is parked, the controller being further configured to, when the jamming is detected, broadcast an emergency message on a first random access channel (RACH) at the output of the interface according to a last known broadcast channel (BCH), the controller being further configured to, when the jamming is detected, determine the at least one last known neighbor serving cell from the stored data structure in the memory, and to broadcast at the output of the interface the emergency message on one or more second RACHs associated with each of the at least one last known neighbor serving cells. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer usable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement method for broadcasting an emergency message regarding a theft or an attempted theft of a vehicle, the method comprising:
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detecting a jamming of a radio frequency (RF) transmission; when the jamming is detected, broadcasting an emergency message on a first random access channel (RACH) associated with the vehicle according to a last known broadcast channel (BCH); when the jamming is detected, determining at least one last known neighbor serving cell from a stored data structure, and broadcasting the emergency message on one or more second RACHs associated with each of the at least one last known neighbor serving cells. - View Dependent Claims (18, 19, 20)
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Specification